Supermoon 2013 Dates And When To Watch

A supermoon
occurs when a full moon coincides with the moon being closest to
Earth in its orbit, also known as perigee. The near perfect
timing of these two celestial events makes the moon
appear larger and brighter in the night sky.

The June supermoon will be the largest one in 2013 — the moon
won't come this close to Earth again until August 2014 — but you
can expect another supermoon on July 22. The last supermoon was
on May 25.

While a supermoon does bring extra-high tides, the extra
gravitational force is not big enough to produce any significant
changes in seismic activity for those who are concerned that
the moon's close proximity to Earth will trigger earthquakes and
volcanic eruptions.